.btn1{
    position: relative;
    margin-top: 10px;
    display: inline-block;
    width: 75px;
    height: 20px;
    overflow: hidden;
    text-align: center;
    /*font-size: 14px;*/
    line-height: 18px;
    vertical-align: center;
    border: 1px solid #3b5998;
    background-color: #3b5998;
    color: #fff;
    border-bottom-right-radius: 3px;
}
.btn1:hover{
    border: 1px solid #3b5998;
    background-color: #3b5998;
}
.btn1 input{
    position: absolute;
    left: 0;
    top: 0;
    opacity: 0;
}
input{
    background-color: #3b5998;
    border: #0a6aa1;
}
select{
    background-color: #3b5998;
    border: #0a6aa1;
}